FAQ: My vial of Seachem MetroPlex™ is only partially filled. Did I get shorted?

Nope! All our medications use the same size of vial, but are actually filled by weight.  Medications vary in density, so you may see a difference in the volume of medication that makes up 5 grams, depending on what medication you buy. There are 5 grams of MetroPlex™ in your vial.